It gets Curiouser and Curiouser, said Alice...

My deleted stay is back, but now my Fast-Track points are off by 5000. The first stay doesn't show at all, the 3rd one is credited at 15,000 instead of 10,000 - making the total correct but not the details, but the 4th stay shows 20,000 instead of 25,000.

So far, no sign that merely accessing my account is making any difference.

On a positive note, I saw that I have actually gotten credit for one of my Doubletree stays that never posted, through the "missing stay" page on the website. So I will be watchful, but not worry too much for a few days anyway.